This SCH 40 PVC 90 Degree Long Sweep Elbow is designed to turn the flow of a liquid at a 90 degree angle. Spears Schedule 40 PVC fitting designs combine years of proven experience with computer generated stress analysis to yield the optimum physical structure and performance for each fitting. Material reinforcement is uniformly placed in stress concentration areas for substantially improved pressure handling capability. Resulting products are subjected to numerous verification tests to assure the very best PVC fittings available.